Tylenol Dosage by Weight Calculator (Children)
See the label dose and the weight-based range for children’s acetaminophen (Tylenol) liquid at 160 mg per 5 mL. Example: a 22 lb (10 kg) child can have 100 to 150 mg, about 3.1 to 4.7 mL, and the standard label amount is 3.75 mL, no more often than every 4 hours.
Show steps
How to use the Tylenol Dosage by Weight Calculator (Children)
- Enter the values in the fields.
- Press Calculate to see the result with the steps shown.
Formula and method
Dose (mg) = weight (kg) x 10 to 15 mg/kg every 4 to 6 hours, maximum 5 doses and 75 mg/kg (up to 4,000 mg) in 24 hours. Volume (mL) = dose (mg) / 32 for 160 mg per 5 mL liquid.
Children’s Tylenol dosage chart by weight (160 mg/5 mL liquid)
| Weight (lb) | Weight (kg) | Dose |
|---|---|---|
| 12 to 17 lb | 5.4 to 7.7 kg | 2.5 mL |
| 18 to 23 lb | 8.2 to 10.4 kg | 3.75 mL |
| 24 to 35 lb | 10.9 to 15.9 kg | 5 mL |
| 36 to 47 lb | 16.3 to 21.3 kg | 7.5 mL |
| 48 to 59 lb | 21.8 to 26.8 kg | 10 mL |
| 60 to 71 lb | 27.2 to 32.2 kg | 12.5 mL |
| 72 to 95 lb | 32.7 to 43.1 kg | 15 mL |
| 96 lb and over | 43.5 kg and over | 20 mL |
Important age rules
Babies under 12 weeks should not be given acetaminophen unless a doctor tells you to. A rectal temperature of 100.4 F (38 C) or higher in a baby under 3 months needs medical care right away.
How often can I give it?
Every 4 to 6 hours as needed, no more than 5 doses in 24 hours. Keep a written log to avoid double doses, especially when two caregivers are involved.
Common mistakes to avoid
Using adult tablets or a kitchen spoon, giving two products that both contain acetaminophen, and guessing the weight. This calculator is for education and is not medical advice. Always read the product label, use the dosing syringe that came with the medicine, and call your pediatrician or Poison Control (1-800-222-1222 in the US) if you are unsure.
Frequently asked questions
How much Tylenol can I give my child by weight?
10 to 15 mg per kg every 4 to 6 hours; the label chart is easier to use.
How much Tylenol for a 20 lb baby?
The label amount is 3.75 mL of 160 mg/5 mL liquid.
How often can I give Tylenol?
Not more often than every 4 hours, up to 5 doses a day.
Can I give Tylenol to a newborn?
Not without a doctor’s instructions under 12 weeks.
Should I use age or weight?
Weight is more accurate.
What if I gave too much?
Call Poison Control 1-800-222-1222 right away.
Sources
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